I should have said that there was a second symptom. I have IBS, so I didn’t connect the vaccine with the mild laxative event that happened, but in light of this article, it could have been the vaccine. Specifically, it could have been the polyethylene glycol (PEG). It also could have been just something I ate, which is highly likely. Regardless, it was a mild, singular event.
Anaphylactic reactions seem to be a literal 1 in a million event. Nevertheless, if someone has a known PEG allergy then they might want to consider a different vaccine. With that said there is this:
Quote:
Other scientists, meanwhile, are not convinced PEG is involved at all. “There is a lot of exaggeration when it comes to the risk of PEGs and CARPA,” says Moein Moghimi, a nanomedicine researcher at Newcastle University who suspects a more conventional mechanism is causing the reactions. “You are technically delivering an adjuvant at the injection site to excite the local immune system. It happens that some people get too much excitement, because they have a relatively high number of local immune cells.”
Others note the amount of PEG in the mRNA vaccines is orders of magnitude lower than in most PEGylated drugs. And whereas those drugs are often given intravenously, the two COVID-19 vaccines are injected into a muscle, which leads to a delayed exposure and a much lower level of PEG in the blood, where most anti-PEG antibodies are.
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https://www.sciencemag.org/news/2020...rgic-reactions